10.1021/jm00149a028
The research aimed to isolate, elucidate the structures of, and characterize the interactions of four isomers of N-(bromoacetyl)-N'-[3-(o-allylphenoxy)-2-hydroxypropyl]-1,8-diamino-p-menthane (BAAM) with β-adrenoceptors. The purpose was to understand their activity as alkylating β-blockers and their potential use in affinity labeling of β-adrenoceptors, which is a technique valuable for biochemical and physiological studies of these proteins. The study concluded that the isomer with the aromatic group on carbon 1 of p-menthane and with the 2 configuration (2-1) had the highest affinity for β-adrenoceptors in rat heart and lungs and acted as a ligand that binds irreversibly at the drug binding site of the receptor. Other isomers also showed affinity for the receptors, though with varying degrees of effectiveness and impact on receptor affinity. Key chemicals used in the process included 1,8-diamino-p-menthane, o-allylphenyl glycidyl ether, bromoacetyl bromide, and various solvents and reagents for the synthesis, purification, and testing of the isomers.